Revert changes adding format args to yes-or-no-p and y-or-n-p.
[bpt/emacs.git] / etc / NEWS
1 GNU Emacs NEWS -- history of user-visible changes.
2
3 Copyright (C) 2010, 2011 Free Software Foundation, Inc.
4 See the end of the file for license conditions.
5
6 Please send Emacs bug reports to bug-gnu-emacs@gnu.org.
7 If possible, use M-x report-emacs-bug.
8
9 This file is about changes in Emacs version 24.
10
11 See files NEWS.23, NEWS.22, NEWS.21, NEWS.20, NEWS.19, NEWS.18,
12 and NEWS.1-17 for changes in older Emacs versions.
13
14 You can narrow news to a specific version by calling `view-emacs-news'
15 with a prefix argument or by typing C-u C-h C-n.
16
17
18 Temporary note:
19 +++ indicates that the appropriate manual has already been updated.
20 --- means no change in the manuals is called for.
21 When you add a new item, please add it without either +++ or ---
22 so we will look at it and add it to the manual.
23
24 \f
25 * Installation Changes in Emacs 24.1
26
27 ** Configure links against libselinux if it is found.
28 You can disable this by using --without-selinux.
29
30 ---
31 ** By default, the installed Info and man pages are compressed.
32 You can disable this by configuring --without-compress-info.
33
34 ---
35 ** There are new configure options:
36 --with-mmdf, --with-mail-unlink, --with-mailhost.
37 These provide no new functionality, they just remove the need to edit
38 lib-src/Makefile by hand in order to use the associated features.
39
40 ---
41 ** Emacs can be compiled against Gtk+ 3.0 if you pass --with-x-toolkit=gtk3
42 to configure. Note that other libraries used by Emacs, RSVG and GConf,
43 also depend on Gtk+. You can disable them with --without-rsvg and
44 --without-gconf.
45
46 ** There is a new configure option --enable-use-lisp-union-type.
47 This is only useful for Emacs developers to debug certain types of bugs.
48 This is not a new feature; only the configure flag is new.
49
50 ---
51 ** New translation of the Emacs Tutorial in Hebrew is available
52 Type `C-u C-h t' to choose it in case your language setup doesn't
53 automatically select it.
54
55 \f
56 * Startup Changes in Emacs 24.1
57
58 ** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte
59 command line arguments, and the EMACS_UNIBYTE environment variable, no
60 longer have any effect. (They were declared obsolete in Emacs 23.)
61
62 ** New command line option `--no-site-lisp' removes site-lisp directories
63 from load-path. -Q now implies this.
64
65 \f
66 * Changes in Emacs 24.1
67
68 ** emacsclient changes
69
70 *** New emacsclient argument --parent-id ID can be used to open a
71 client frame in parent X window ID, via XEmbed. This works like the
72 --parent-id argument to Emacs.
73
74 *** If emacsclient shuts down as a result of Emacs signalling an
75 error, its exit status is 1.
76
77 ** Completion can cycle, depending on completion-cycle-threshold.
78
79 ** auto-mode-case-fold is now enabled by default.
80
81 +++
82 ** Emacs now supports display and editing of bidirectional text.
83
84 See the node "Bidirectional Editing" in the Emacs Manual for some
85 initial documentation.
86
87 To turn this on in any given buffer, set the buffer-local variable
88 `bidi-display-reordering' to a non-nil value. The default is nil.
89
90 The buffer-local variable `bidi-paragraph-direction', if non-nil,
91 forces each paragraph in the buffer to have its base direction
92 according to the value of this variable. Possible values are
93 `right-to-left' and `left-to-right'. If the value is nil (the
94 default), Emacs determines the base direction of each paragraph from
95 its text, as specified by the Unicode Bidirectional Algorithm.
96
97 The function `current-bidi-paragraph-direction' returns the actual
98 value of paragraph base direction at point.
99
100 Reordering of bidirectional text for display in Emacs is a "Full
101 bidirectionality" class implementation of the Unicode Bidirectional
102 Algorithm.
103
104 Note that some advanced display features, such as overlay strings and
105 `display' text properties, do not yet work correctly when
106 bidirectional text is reordered for display.
107
108 ** GTK scroll-bars are now placed on the right by default.
109 Use `set-scroll-bar-mode' to change this.
110
111 ** GTK tool bars can have just text, just images or images and text.
112 Customize `tool-bar-style' to choose style. On a Gnome desktop, the default
113 is taken from the desktop settings.
114
115 ** GTK tool bars can be placed on the left/right or top/bottom of the frame.
116 The frame-parameter tool-bar-position controls this. It takes the values
117 top, left, right or bottom. The Options => Show/Hide menu has entries
118 for this.
119
120 ** ImageMagick support.
121 It is now possible to use the ImageMagick library to load many new
122 image formats in Emacs. By default, Emacs links with the ImageMagick
123 libraries if they are present at build time. To disable this, use
124 the configure option `--without-imagemagick'.
125
126 The new function `imagemagick-types' returns a list of image file
127 extensions that your installation of ImageMagick supports. The
128 function `imagemagick-register-types' enables ImageMagick support for
129 these image types, minus those listed in `imagemagick-types-inhibit'.
130
131 See the Emacs Lisp Reference Manual for more information.
132
133 ** The colors for selected text (the region face) are taken from the GTK
134 theme when Emacs is built with GTK.
135
136 ** Emacs uses GTK tooltips by default if built with GTK. You can turn that
137 off by customizing x-gtk-use-system-tooltips.
138
139 ** Lucid menus and dialogs can display antialiased fonts if Emacs is built
140 with Xft. To change font, use X resource faceName, for example:
141 Emacs.pane.menubar.faceName: Courier-12
142 Set faceName to none and use font to use the old X fonts.
143
144 +++
145 ** Enhanced support for characters that have no glyphs in available fonts
146 If a character has no glyphs in any of the available fonts, Emacs by
147 default will display it either as a hexadecimal code in a box or as a
148 thin 1-pixel space. In addition to these two methods, Emacs can
149 display these characters as empty box, as an acronym, or not display
150 them at all. To change how these characters are displayed, customize
151 the variable `glyphless-char-display-control'.
152
153 On character terminals these methods are used for characters that
154 cannot be encoded by the `terminal-coding-system'.
155
156 ** On graphical displays, the mode-line no longer ends in dashes.
157
158 ** Basic SELinux support has been added.
159 This requires Emacs to be linked with libselinux at build time.
160
161 *** Emacs preserves the SELinux file context when backing up, and
162 optionally when copying files. To this end, copy-file has an extra
163 optional argument, and backup-buffer and friends include the SELinux
164 context in their return values.
165
166 *** The new functions file-selinux-context and set-file-selinux-context
167 get and set the SELinux context of a file.
168
169 *** Tramp offers handlers for file-selinux-context and set-file-selinux-context
170 for remote machines which support SELinux.
171
172 ** The function kill-emacs is now run upon receipt of the signals SIGTERM
173 and SIGHUP, and upon SIGINT in batch mode.
174
175 ** kill-emacs-hook is now also run in batch mode.
176
177 ** New scrolling commands `scroll-up-command' and `scroll-down-command'
178 (bound to C-v/[next] and M-v/[prior]) does not signal errors at top/bottom
179 of buffer at first key-press (instead moves to top/bottom of buffer)
180 when a new variable `scroll-error-top-bottom' is non-nil.
181
182 ** New scrolling commands `scroll-up-line' and `scroll-down-line'
183 scroll a line instead of full screen.
184
185 ** New property `scroll-command' should be set on a command's symbol to
186 define it as a scroll command affected by `scroll-preserve-screen-position'.
187
188 ** Trash changes
189
190 *** `delete-by-moving-to-trash' now only affects commands that specify
191 trashing. This avoids inadvertently trashing temporary files.
192
193 *** Calling `delete-file' or `delete-directory' with a prefix argument
194 now forces true deletion, regardless of `delete-by-moving-to-trash'.
195
196 ** New option `list-colors-sort' defines the color sort order
197 for `list-colors-display'.
198
199 ** An Emacs Lisp package manager is now included.
200 This is a convenient way to download and install additional packages,
201 from a package repository at elpa.gnu.org.
202
203 *** `M-x list-packages' shows a list of packages, which can be
204 selected for installation.
205
206 *** New command `describe-package', bound to `C-h P'.
207
208 *** By default, all installed packages are loaded and activated
209 automatically when Emacs starts up. To disable this, set
210 `package-enable-at-startup' to nil. To change which packages are
211 loaded, customize `package-load-list'.
212
213 ** An Emacs Lisp testing tool is now included.
214 Emacs Lisp developers can use this tool to write automated tests for
215 their code. See the ERT info manual for details.
216
217 ** Custom Themes
218
219 *** `M-x customize-themes' lists Custom themes which can be enabled.
220
221 *** New option `custom-theme-load-path' is the load path for themes.
222 Emacs no longer looks for custom themes in `load-path'. The default
223 is to search in `custom-theme-directory', followed by a built-in theme
224 directory named "themes/" in `data-directory'.
225
226 *** New option `custom-safe-themes' records known-safe theme files.
227 If a theme is not in this list, Emacs queries before loading it, and
228 offers to save the theme to `custom-safe-themes' automatically. By
229 default, all themes included in Emacs are treated as safe.
230
231 ** The user option `remote-file-name-inhibit-cache' controls whether
232 the remote file-name cache is used for read access.
233
234 ** The standalone programs lib-src/digest-doc and sorted-doc have been
235 replaced with Lisp commands `doc-file-to-man' and `doc-file-to-info'.
236
237 ** The variable `focus-follows-mouse' now always defaults to nil.
238
239 \f
240 * Editing Changes in Emacs 24.1
241
242 +++
243 ** There is a new command `count-words-region', which does what you expect.
244
245 ** completion-at-point now handles tags and semantic completion.
246
247 ** The default value of `backup-by-copying-when-mismatch' is now t.
248
249 ** The command `just-one-space' (C-SPC), if given a negative argument,
250 also deletes newlines around point.
251
252 ** Deletion changes
253
254 *** New option `delete-active-region'.
255 If non-nil, C-d, [delete], and DEL delete the region if it is active
256 and no prefix argument is given. If set to `kill', these commands
257 kill instead.
258
259 *** New command `delete-forward-char', bound to C-d and [delete].
260 This is meant for interactive use, and obeys `delete-active-region'.
261 The command `delete-char' does not obey `delete-active-region'.
262
263 *** `delete-backward-char' is now a Lisp function.
264 Apart from obeying `delete-active-region', its behavior is unchanged.
265 However, the byte compiler now warns if it is called from Lisp; you
266 should use delete-char with a negative argument instead.
267
268 *** The option `mouse-region-delete-keys' has been deleted.
269
270 ** Selection changes.
271
272 The default handling of clipboard and primary selections has been
273 changed to conform with other X applications. The exact changes are
274 described below; in short, mouse commands to select and paste text now
275 use the primary selection, while all other commands for killing and
276 yanking text now use the clipboard.
277
278 *** Merely selecting text (e.g. with drag-mouse-1) does not add it to
279 the kill-ring. On systems with a primary selection separate from the
280 clipboard (such as X), the selected text is put in the primary
281 selection.
282
283 *** mouse-2 is now bound to `mouse-yank-primary', which pastes from
284 the primary selection regardless of the contents of the kill-ring.
285
286 *** Commands that kill text or copy it to the kill-ring (M-w, C-w,
287 C-k, etc.) also put the killed text into the clipboard. This change
288 also means that the "Copy", "Cut", and "Paste" items in the "Edit"
289 menu are now exactly equivalent to, respectively M-w, C-w, and C-y.
290
291 *** Yank commands, such as C-y and M-y, retrieve text from the
292 clipboard if it is available.
293
294 *** The above changes are reflected in the following new defaults:
295
296 **** `select-active-regions' now defaults to t.
297 It also accepts a new value, `only', which means to only set the
298 primary selection for temporarily active regions (usually made by
299 mouse-dragging or shift-selection).
300
301 **** `mouse-2' is now bound to `mouse-yank-primary'.
302 Previously, it was bound to `mouse-yank-at-click' (which is now
303 unbound by default).
304
305 **** `x-select-enable-clipboard' now defaults to t on all platforms.
306 Note that this variable was already non-nil by default on MS-Windows,
307 which does not support the primary selection between applications.
308
309 **** `x-select-enable-primary' now defaults to nil.
310 This variable exists only on X; its default value was t in previous
311 versions.
312
313 **** `mouse-drag-copy-region' now defaults to nil.
314
315 *** To return to the previous behavior, where mouse commands use the
316 clipboard, change `mouse-drag-copy-region' and (on X only)
317 `x-select-enable-primary' to t. If you don't want Emacs to put the
318 text into the clipboard, only to the primary selection, additionally
319 set `x-select-enable-clipboard' to nil.
320
321 *** Support for X cut buffers has been removed.
322
323 ** New command `rectangle-number-lines', bound to `C-x r N', numbers
324 the lines in the current rectangle. With an prefix argument, this
325 prompts for a number to count from and for a format string.
326
327 \f
328 * Changes in Specialized Modes and Packages in Emacs 24.1
329
330 ** Prolog mode has been completely revamped, with lots of additional
331 functionality such as more intelligent indentation, electricty, support for
332 more variants, including Mercury, and a lot more.
333
334 ** shell-mode can track your cwd by reading it from your prompt.
335 Just set shell-dir-cookie-re to an appropriate regexp.
336
337 ** Modula-2 mode provides auto-indentation.
338
339 ** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
340
341 ** FIXME: xdg-open for browse-url and reportbug, 2010/08.
342
343 ** Archive Mode has basic support to browse 7z archives.
344
345 ** browse-url has gotten a new variable that is used for mailto: URLs,
346 `browse-url-mailto-function', which defaults to `browse-url-mail'.
347
348 ** ERC changes
349
350 *** New vars `erc-autojoin-timing' and `erc-autojoin-delay'.
351 If the value of `erc-autojoin-timing' is 'ident, ERC autojoins after a
352 successful NickServ identification, or after `erc-autojoin-delay'
353 seconds. The default value, 'ident, means to autojoin immediately
354 after connecting.
355
356 *** New variable `erc-coding-system-precedence': If we use `undecided'
357 as the server coding system, this variable will then be consulted.
358 The default is to decode strings that can be decoded as utf-8 as
359 utf-8, and do the normal `undecided' decoding for the rest.
360
361 ** Eshell changes
362
363 *** The default value of eshell-directory-name is a directory named
364 "eshell" in `user-emacs-directory'. If the old "~/.eshell/" directory
365 exists, that is used instead.
366
367 ** In ido-mode, C-v is no longer bound to ido-toggle-vc.
368 The reason is that this interferes with cua-mode.
369
370 ** partial-completion-mode is now obsolete.
371 You can get a comparable behavior with:
372 (setq completion-styles '(partial-completion initials))
373 (setq completion-pcm-complete-word-inserts-delimiters t)
374
375 ** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
376
377 ** server can listen on a specific port using the server-port option.
378
379 ** Calendar, Diary, and Appt
380
381 ---
382 *** The obsolete (since Emacs 22.1) method of enabling the appt package
383 by adding appt-make-list to diary-hook has been removed. Use appt-activate.
384
385 ---
386 *** Some appt variables (obsolete since Emacs 22.1) have been removed:
387 appt-issue-message (use the function appt-activate)
388 appt-visible/appt-msg-window (use the variable appt-display-format)
389
390 ---
391 *** Some diary function aliases (obsolete since Emacs 22.1) have been removed:
392 view-diary-entries, list-diary-entries, show-all-diary-entries
393
394 ** Customize
395
396 *** Customize buffers now contain a search field.
397 The search is performed using `customize-apropos'.
398 To turn off the search field, set custom-search-field to nil.
399
400 *** Custom options now start out hidden if at their default values.
401 Use the arrow to the left of the option name to toggle visibility.
402
403 *** custom-buffer-sort-alphabetically now defaults to t.
404
405 *** The color widget now has a "Choose" button, which allows you to
406 choose a color via list-colors-display.
407
408 ** Dired-x
409
410 *** dired-jump and dired-jump-other-window called with a prefix argument
411 read a file name from the minibuffer instead of using buffer-file-name.
412
413 ** Directory local variables can apply to file-less buffers.
414 For example, adding "(diff-mode . ((mode . whitespace)))" to your
415 .dir-locals.el file, will turn on `whitespace-mode' for *vc-diff* buffers.
416
417 ** SQL Mode enhancements.
418
419 *** Several variables have been marked as safe local variables. The
420 variables `sql-product', `sql-user', `sql-server', `sql-database' and
421 `sql-port' can now be safely used as local variables.
422
423 *** `sql-dialect' is a synonym for `sql-product'.
424
425 *** Added ability to login with a port on MySQL and Postgres.
426 The custom variable `sql-port' can be specified for connection to
427 MySQL or Postgres servers. By default, the port is not listed in
428 either login parameter, but will be added to the command line if set
429 to a non-zero value.
430
431 *** Dynamic selection of product in an SQL interactive session.
432 If you use `sql-product-interactive' to start an SQL interactive
433 session it uses the current value of `sql-product'. Preceding the
434 invocation with C-u will force it to ask for the product before
435 creating the session.
436
437 *** Renaming a SQL interactive buffer when it is created.
438 Prefixing the SQL interactive commands (`sql-sqlite', `sql-postgres',
439 `sql-mysql', etc.) with C-u will force a new interactive session to be
440 started and will prompt for the new name. This will reduce the need
441 for `sql-rename-buffer' is most common use cases.
442
443 *** Command continuation prompts in SQL interactive mode are suppressed.
444 Multiple line commands in SQL interactive mode, generate command
445 continuation prompts which needlessly confuse the output. These
446 prompts are now filtered out from the output. This change impacts
447 multiple line SQL statements entered with C-j between each line,
448 statements yanked into the buffer and statements sent with
449 `sql-send-*' functions.
450
451 *** Custom variables control prompting for login parameters.
452 Each supported product has a custom variable `sql-*-login-params'
453 which is a list of the parameters to be prompted for before a
454 connection is established.
455
456 The lists consist of the following five tokens: `user', `password',
457 `database', `server', and `port'. The order in which they appear is
458 the order in which they are prompted. The tokens symbols can be
459 replaced by a sublist starting with the token and followed by a plist
460 which control the prompting for values. The tokens `user',
461 `database', and `server' each can take a property of :default which
462 specifies the value to be used if no value is entered. The
463 `database', `server', and `port' tokens handle the :completion
464 property which restricts the entry to either one of the values in the
465 list or to one of the values returned by the function provided as the
466 property value. The `database' and `server' tokens also accept the
467 :file property whose value is a regexp to identify useful file names.
468
469 (user :default DEF)
470 (database :default DEF
471 :file FILEPAT
472 :completion COMPLETE)
473 (server :default DEF
474 :file FILEPAT
475 :completion COMPLETE)
476
477 The FILEPAT when :file is specified is a regexp that will match valid
478 file names (without the directory portion). Generally these strings
479 will be of the form ".+\.SUF" where SUF is the desired file suffix.
480
481 When :completion is specified, the COMPLETE corresponds to the
482 PREDICATE argument to the `completing-read' function (a list of
483 possible values or a function returning such a list).
484
485 *** Added `sql-connection-alist' to record login parameter values.
486 An alist for recording different username, database and server
487 values. If there are multiple databases that you connect to the
488 parameters needed can be stored in this alist.
489
490 For example, the following might be set in the user's init.el:
491
492 (setq sql-connection-alist
493 '((dev (sql-product 'sqlite)
494 (sql-database "/home/mmaug/dev.db"))
495 (prd (sql-product 'oracle)
496 (sql-user "mmaug")
497 (sql-database "iprd2a"))))
498
499 This defines two connections named "dev" and "prd".
500
501 *** Added `sql-connect' to use predefined connections.
502 Sets the login parameters based on the values in the
503 `sql-connection-alist' and start a SQL interactive session. Any
504 values specified in the connection will not be prompted for.
505
506 In the example above, if the user were to invoke M-x sql-connect, they
507 would be prompted for the connection. The user can respond with
508 either "dev" or "prd". The "dev" connection would connect to the
509 SQLite database without prompting; the "prd" connection would prompt
510 for the users password and then connect to the Oracle database.
511
512 **** Added SQL->Start... submenu when connections are defined.
513 When connections have been defined, there is a submenu available that
514 allows the user to select one to start a SQLi session. The "Start
515 SQLi Session" item moves to the "Start..." submenu when cnnections
516 have been defined.
517
518 **** Added "Save Connection" menu item in SQLi buffers.
519 When a SQLi session is not started by a connection then
520 `sql-save-connection' will gather the login params specified for the
521 session and save them as a new connection.
522
523 *** List database objects and details.
524 Once a SQL interactive session has been started, you can get a list of
525 the objects in the database and see details of those objects. The
526 objects shown and the details available are product specific.
527
528 **** List all objects.
529 Using `M-x sql-list-all', `C-c C-l a' or selecting "SQL->List all
530 objects" will list all the objects in the database. At a minimum it
531 lists the tables and views in the database. Preceeding the command by
532 universal argument may provide additional details or extend the
533 listing to include other schemas objects. The list will appear in a
534 separate window in view-mode.
535
536 **** List Table details.
537 Using `M-x sql-list-table', `C-c C-l t' or selecting "SQL->List Table
538 details" will ask for the name of a database table or view and display
539 the list of columns in the relation. Preceeding the comand with the
540 universal argument may provide additional details about each column.
541 The list will appear in a separate window in view-mode.
542
543 *** Added option `sql-send-terminator'.
544 When set makes sure that each command sent with `sql-send-*' commands
545 are properly terminated and submitted to the SQL processor.
546
547 *** Added option `sql-oracle-scan-on'.
548 When set commands sent to Oracle's SQL*Plus are scanned for strings
549 starting with an ampersand and the user is asked for replacement text.
550 In general, the SQL*Plus option SCAN should always be set OFF under
551 SQL interactive mode and this option used in its place.
552
553 *** SQL interactive mode will replace tabs with spaces.
554 This prevents the comand interpretter for MySQL and Postgres from
555 listing object name completions when being sent text via
556 `sql-send-*' functions.
557
558 *** An API for manipulating SQL product definitions has been added.
559
560 ** sregex.el is now obsolete, since rx.el is a strict superset.
561
562 ** s-region.el is now declared obsolete, superceded by shift-select-mode
563 enabled by default in 23.1.
564
565 ** gdb-mi
566
567 *** GDB User Interface migrated to GDB Machine Interface and now
568 supports multithread non-stop debugging and debugging of several
569 threads simultaneously.
570
571 ** D-Bus
572
573 *** It is possible now, to access alternative buses than the default
574 system or session bus.
575
576 *** dbus-register-{service,method,property}
577 The -method and -property functions do not automatically register
578 names anymore.
579
580 The new function dbus-register-service registers a service known name
581 on a D-Bus without simultaneously registering a property or a method.
582
583 ** Tramp
584
585 *** There exists a new inline access method "ksu" (kerberized su).
586
587 *** The following access methods are discontinued: "ssh1_old",
588 "ssh2_old", "scp1_old", "scp2_old" and "fish".
589
590 ** VC and related modes
591
592 *** Support for pulling on distributed version control systems.
593 The vc-update command now runs a "pull" operation, if it is supported.
594 This updates the current branch from upstream. A prefix argument
595 means to prompt the user for command specifics, e.g. a pull location.
596
597 **** vc-pull is an alias for vc-update.
598
599 **** Currently supported by Bzr.
600
601 *** Support for merging on distributed version control systems.
602 The vc-merge command now runs a "merge" operation, if it is supported.
603 This merges another branch into the current one. A prefix argument
604 means to prompt the user for command specifics, e.g. a merge location.
605
606 **** Currently supported by Bzr.
607
608 \f
609 * New Modes and Packages in Emacs 24.1
610
611 ** New global minor modes electric-pair-mode, electric-indent-mode,
612 and electric-layout-mode.
613
614 ** pcase.el provides the ML-style pattern matching macro `pcase'.
615
616 ** secrets.el is an implementation of the Secret Service API, an
617 interface to password managers like GNOME Keyring or KDE Wallet. The
618 Secret Service API requires D-Bus for communication. The command
619 `secrets-show-secrets' offers a buffer with a visualization of the
620 secrets.
621
622 ** notifications.el provides an implementation of the Desktop
623 Notifications API. It requires D-Bus for communication.
624
625 \f
626 * Incompatible Lisp Changes in Emacs 24.1
627
628 ** `compose-mail' now accepts an optional 8th arg, RETURN-ACTION, and
629 passes it to the mail user agent function. This argument specifies an
630 action for returning to the caller after finishing with the mail.
631 This is currently used by Rmail to delete a mail window.
632
633 ** For mouse click input events in the text area, the Y pixel
634 coordinate in the POSITION list now counts from the top of the text
635 area, excluding any header line. Previously, it counted from the top
636 of the header line.
637
638 ** Remove obsolete name `e' (use `float-e' instead).
639
640 ** A backquote not followed by a space is now always treated as new-style.
641
642 ** Test for special mode-class was moved from view-file to view-buffer.
643 FIXME: This only says what was changed, but not what are the
644 programmer-visible consequences.
645
646 ** Passing a nil argument to a minor mode function now turns the mode
647 ON unconditionally.
648
649 ** During startup, Emacs no longer adds entries for `menu-bar-lines'
650 and `tool-bar-lines' to `default-frame-alist' and
651 `initial-frame-alist'. With these alist entries omitted, `make-frame'
652 checks the value of the variable `menu-bar-mode'/`tool-bar-mode' to
653 determine whether to create a menu-bar or tool-bar, respectively.
654 If the alist entries are added, they override the value of
655 `menu-bar-mode'/`tool-bar-mode'.
656
657 ** Regions created by mouse dragging are now normal active regions,
658 similar to the ones created by shift-selection. In previous Emacs
659 versions, these regions were delineated by `mouse-drag-overlay', which
660 has now been removed.
661
662 ** cl.el no longer provides `cl-19'.
663
664 ** The following functions and aliases, obsolete since at least Emacs 21.1,
665 have been removed:
666 comint-kill-output, decompose-composite-char, outline-visible,
667 internal-find-face, internal-get-face, frame-update-faces,
668 frame-update-face-colors, x-frob-font-weight, x-frob-font-slant,
669 x-make-font-bold, x-make-font-demibold, x-make-font-unbold
670 x-make-font-italic, x-make-font-oblique, x-make-font-unitalic
671 x-make-font-bold-italic, mldrag-drag-mode-line, mldrag-drag-vertical-line,
672 iswitchb-default-keybindings, char-bytes, isearch-return-char,
673 make-local-hook
674
675 ** The following variables and aliases, obsolete since at least Emacs 21.1,
676 have been removed:
677 checkdoc-minor-keymap, vc-header-alist, directory-sep-char,
678 font-lock-defaults-alist
679
680 ** The following files, obsolete since at least Emacs 21.1, have been removed:
681 sc.el, x-menu.el, rnews.el, rnewspost.el
682
683 ** FIXME finder-inf.el changes.
684
685 \f
686 * Lisp changes in Emacs 24.1
687
688 ** New function `read-char-choice' reads a restricted set of characters,
689 discarding any inputs not inside the set.
690
691 ** `image-library-alist' is renamed to `dynamic-library-alist'.
692 The variable is now used to load all kind of supported dynamic libraries,
693 not just image libraries. The previous name is still available as an
694 obsolete alias.
695
696 ** New variable syntax-propertize-function to set syntax-table properties.
697 Replaces font-lock-syntactic-keywords which are now obsolete.
698 This allows syntax-table properties to be set independently from font-lock:
699 just call syntax-propertize to make sure the text is propertized.
700 Together with this new variable come a new hook
701 syntax-propertize-extend-region-functions, as well as two helper functions:
702 syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords
703 as-is; and syntax-propertize-rules which provides a new way to specify
704 syntactic rules.
705
706 ** New hook post-self-insert-hook run at the end of self-insert-command.
707
708 +++
709 ** Syntax tables support a new "comment style c" additionally to style b.
710 ** frame-local variables cannot be let-bound any more.
711 ** prog-mode is a new major-mode meant to be the parent of programming mode.
712 ** define-minor-mode accepts a new keyword :variable.
713
714 ** `delete-file' and `delete-directory' now accept optional arg TRASH.
715 Trashing is performed if TRASH and `delete-by-moving-to-trash' are
716 both non-nil. Interactively, TRASH defaults to t, unless a prefix
717 argument is supplied (see Trash changes, above).
718
719 ** buffer-substring-filters is obsoleted by filter-buffer-substring-functions.
720
721 ** New completion style `substring'.
722
723 ** `facemenu-read-color' is now an alias for `read-color'.
724 The command `read-color' now requires a match for a color name or RGB
725 triplet, instead of signalling an error if the user provides a invalid
726 input.
727
728 ** Tool-bars can display separators.
729 Tool-bar separators are handled like menu separators in menu-bar maps,
730 i.e. via menu entries of the form `(menu-item "--")'.
731
732 ** Image API
733
734 *** When the image type is one of listed in `image-animated-types'
735 and the number of sub-images in the image is more than one, then the
736 new function `create-animated-image' creates an animated image where
737 sub-images are displayed successively with the duration defined by
738 `image-animate-max-time' and the delay between sub-images defined
739 by the Graphic Control Extension of the image.
740
741 *** `image-extension-data' is renamed to `image-metadata'.
742
743 ** XML and HTML parsing
744
745 *** If Emacs is compiled with libxml2 support (which is the default),
746 two new Emacs Lisp-level functions are defined:
747 `libxml-parse-html-region' (which will parse "real world" HTML)
748 and `libxml-parse-xml-region' (which parses XML). Both return an
749 Emacs Lisp parse tree.
750
751 FIXME: These should be front-ended by xml.el.
752
753 ** FIXME GnuTLS
754
755 ** Isearch
756
757 *** New hook `isearch-update-post-hook' that runs in `isearch-update'.
758
759 ** Progress reporters can now "spin".
760 The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can
761 now be nil, or omitted. This makes a "non-numeric" reporter. Each
762 time you call `progress-reporter-update' on that progress reporter,
763 with a nil or omitted VALUE argument, the reporter message is
764 displayed with a "spinning bar".
765
766 \f
767 * Changes in Emacs 24.1 on non-free operating systems
768
769 ** New configure.bat option --enable-checking builds emacs with extra
770 runtime checks.
771
772 ** New configure.bat option --distfiles to specify files to be
773 included in binary distribution
774
775 ** New make target `dist' to create binary disttribution for Windows
776 platform
777
778 \f
779 ----------------------------------------------------------------------
780 This file is part of GNU Emacs.
781
782 GNU Emacs is free software: you can redistribute it and/or modify
783 it under the terms of the GNU General Public License as published by
784 the Free Software Foundation, either version 3 of the License, or
785 (at your option) any later version.
786
787 GNU Emacs is distributed in the hope that it will be useful,
788 but WITHOUT ANY WARRANTY; without even the implied warranty of
789 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
790 GNU General Public License for more details.
791
792 You should have received a copy of the GNU General Public License
793 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
794
795 \f
796 Local variables:
797 mode: outline
798 paragraph-separate: "[ \f]*$"
799 end: